The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2012
Filed:
Mar. 12, 2009
Kensuke Kuraki, Kawasaki, JP;
Shohei Nakagata, Kawasaki, JP;
Hideaki Ishii, Fukuoka, JP;
Motoo Masui, Kawasaki, JP;
Taizo Anan, Kawasaki, JP;
Kensuke Kuraki, Kawasaki, JP;
Shohei Nakagata, Kawasaki, JP;
Hideaki Ishii, Fukuoka, JP;
Motoo Masui, Kawasaki, JP;
Taizo Anan, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A plurality of background texture patterns each of which includes a region not having a dot and having a feature different from those of the other background texture patterns, are combined, and information is embedded in a background region of a document image. Then, a mathematical-morphology-based conversion is performed on the document image, and thereby a feature of a region not having a dot in each of the background texture patterns is extracted in order to identify the embedded information.